Response explanation:
Cognitive follow-up questions were used to examine how respondents proceeded in answering the questions and how they justified their answers. The test persons’ explanations were quite similar across all three questions and did not differ between the three question versions.
About half of the respondents justified their answers exclusively on the basis of the age of the woman mentioned in the question (30 to 35 years), in which the probability of pregnancy was (still) quite high:
- "Fertility is still very high at that age." (TP133, response to version 3: 95 percent)
- "What would be wrong with it at that age? The woman is still young." (TP202, response to version 2: 70 to 89 percent)
- "I believe that most 30- to 35-year-old women are fertile and very likely to become pregnant." (TP230, response to version 1: 80 to 100 percent).
In some cases, the respondents referred exclusively to the period of unprotected sexual intercourse mentioned in the question or to both the age of the woman and the period mentioned:
- "I have read that within one year, in any case, the majority of women become pregnant. Only after one year do we talk about unfulfilled desire to have children." (TP121, response to version 2: 50 to 69 percent)
- "A year is a long time, so it has to happen at some point." (TP150, response to version 1: 60 to 79 percent)
- "Relatively young age and relatively long period of time. So I assumed that the probability is quite high." (TP126, response to version 1: 60 to 79 percent)
- "Women that age can get pregnant quickly if they have unprotected sex for a year." (TP238, response to version 2: 90 to 100 percent)
Just under 12% of respondents (n = 9) expressed irritation with the time period mentioned in the question or pointed out that not only the time period of sexual intercourse had an impact on the likelihood of becoming pregnant, but also (especially) the frequency and timing of sexual intercourse. In some cases, the answers of these respondents gave the impression that they would have chosen or given higher values without reference to a time period:
- "Depends on how often the woman has sex that year. The question is not well formulated." (TP185, response to version 3: 50 percent)
- "You have to catch the 3 fertile days." (TP377, response to version 2: 0 to 9 percent)
- "Of course, it also depends on when in the month the woman has sexual intercourse. It could be that she never has sexual intercourse at ovulation, in which case I think it would be less likely. That's why I took a concrete mean value." (TP672, response to version 2: 30 to 49 percent)
- "I think it depends on the right timing and frequency, coupled with age-related deteriorated receptivity." (TP718, response to version 1: 60 to 79 percent)
Perceived difficulty of questions
When asked how easy or difficult it was for test persons to answer Question 1, about a quarter (n = 21) responded that they found it "somewhat" or "very" difficult. Most of these respondents (n = 15) had received question version 3 (open-ended question). In their explanations to the follow-up question as to why they had found it difficult to answer the question, the majority of the respondents
stated that they had not yet dealt with the topic and therefore found it difficult to assess the likelihood of pregnancy:
- "My answer is just a guess. I lack facts and knowledge about this." (TP317)
- "This is a topic I do not deal with." (TP395)
- "Because I haven't dealt with it that intensively yet." (TP718)
Sporadically, it was noted that it was difficult to make a judgment for all women in the age group because the likelihood of pregnancy was very individual and depended on several factors:
- "Because I don't think you can give a general answer. Every woman is individual." (TP443)
- "Because there are way too many parameters that influence that." (TP653)